I enjoyed this game as a psychological and story-driven point-n-click. The art is well done and really pulls you into the atmosphere. The music is moody and atmospheric - it doesn't try to take over the experience, and that's a good thing. The story is also interesting, although I still don't quite understand all of it (I kinda like the fact that I don't understand all of it). Also, having different options at the end is a good idea.
There are a few gripes that I have, and I hope that the feedback helps in your future projects. The UI is a bit clunky. Sometimes I had to click the box in the bottom-left corner multiple times before it registered (maybe I wasn't clicking within the correct part of the box, but how would I know?). Also, the Chapter 2's having to walk back and forth in the halls ~5 times in order to be able to interact with things was rather annoying, but I understand how it fits into the narrative (moving in and out of human consciousness). Maybe there's a better way of showing this - I dunno.
Also as some have mentioned, the grammar is not very decent. Normally that's a minor issue, but in a game like this, it tends to take the player out of the immersion. The grammar doesn't have to be great really, just decent.
I also would have liked a bit more detective work within the gameplay itself, so that I could see what choices I may have to make (which became more apparent to me as I was completing the Intrusion Ending and having to rely on the hints). SPOILER: I never really picked up on the fact that there were discrepancies in my memories until the game "narrator" told me so.
Oh, and I never had the problem some others have had with the leave button when looking at my arm (on Firefox).
All in all, I really liked it. Good job and good luck with your future projects.